Add a new basic Exynos4 machine with device tree support that can boot on a Exynos4 processor based board and bring up the console. This acts as a stating point to add device tree support for Exynos4 architecture. Signed-off-by: Thomas Abraham <thomas.abraham@xxxxxxxxxx> --- arch/arm/mach-exynos4/Kconfig | 10 +++ arch/arm/mach-exynos4/Makefile | 1 + arch/arm/mach-exynos4/mach-exynos4-dt.c | 118 +++++++++++++++++++++++++++++++ 3 files changed, 129 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-exynos4/mach-exynos4-dt.c diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig index 0c77ab9..c29de4e 100644 --- a/arch/arm/mach-exynos4/Kconfig +++ b/arch/arm/mach-exynos4/Kconfig @@ -218,6 +218,16 @@ config MACH_NURI help Machine support for Samsung Mobile NURI Board. +config MACH_EXYNOS4_DT + bool "Samsung Exynos4 Machine using device tree" + select CPU_EXYNOS4210 + select USE_OF + select S3C_DEV_HSMMC + select S3C_DEV_HSMMC2 + select EXYNOS4_SETUP_SDHCI + help + Machine support for Samsung Exynos4 machine with device tree enabled. + endmenu comment "Configuration for HSMMC bus width" diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile index b7fe1d7..d2bf5bf 100644 --- a/arch/arm/mach-exynos4/Makefile +++ b/arch/arm/mach-exynos4/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_MACH_SMDKV310) += mach-smdkv310.o obj-$(CONFIG_MACH_ARMLEX4210) += mach-armlex4210.o obj-$(CONFIG_MACH_UNIVERSAL_C210) += mach-universal_c210.o obj-$(CONFIG_MACH_NURI) += mach-nuri.o +obj-$(CONFIG_MACH_EXYNOS4_DT) += mach-exynos4-dt.o # device support diff --git a/arch/arm/mach-exynos4/mach-exynos4-dt.c b/arch/arm/mach-exynos4/mach-exynos4-dt.c new file mode 100644 index 0000000..8e9d2d7 --- /dev/null +++ b/arch/arm/mach-exynos4/mach-exynos4-dt.c @@ -0,0 +1,118 @@ +/* + * Samsung's Exynos4 device tree enabled machine. + * + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * Copyright (c) 2010-2011 Linaro Ltd. + * www.linaro.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/serial_core.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/of_platform.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> + +#include <asm/mach/arch.h> +#include <asm/mach-types.h> + +#include <plat/regs-serial.h> +#include <plat/exynos4.h> +#include <plat/cpu.h> +#include <plat/sdhci.h> + +#include <mach/map.h> + +/* Following are default values for UCON, ULCON and UFCON UART registers */ +#define SMDKV310_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \ + S3C2410_UCON_RXILEVEL | \ + S3C2410_UCON_TXIRQMODE | \ + S3C2410_UCON_RXIRQMODE | \ + S3C2410_UCON_RXFIFO_TOI | \ + S3C2443_UCON_RXERR_IRQEN) + +#define SMDKV310_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE | \ + S5PV210_UFCON_TXTRIG4 | \ + S5PV210_UFCON_RXTRIG4) + +static struct s3c2410_uartcfg smdkv310_uartcfgs[] __initdata = { + [0] = { + .hwport = 0, + .ucon = SMDKV310_UCON_DEFAULT, + .ufcon = SMDKV310_UFCON_DEFAULT, + }, + [1] = { + .hwport = 1, + .ucon = SMDKV310_UCON_DEFAULT, + .ufcon = SMDKV310_UFCON_DEFAULT, + }, + [2] = { + .hwport = 2, + .ucon = SMDKV310_UCON_DEFAULT, + .ufcon = SMDKV310_UFCON_DEFAULT, + }, + [3] = { + .hwport = 3, + .ucon = SMDKV310_UCON_DEFAULT, + .ufcon = SMDKV310_UFCON_DEFAULT, + }, +}; + +/* + * The following lookup table is used to override device names when devices + * are registered from device tree. This is temporarily added to enable + * device tree support addition for the Exynos4 architecture. + * + * For drivers that require platform data to be provided from the machine + * file, a platform data pointer can also be supplied along with the + * devices names. Usually, the platform data elements that cannot be parsed + * from the device tree by the drivers (example: function pointers) are + * supplied. But it should be noted that this is a temporary mechanism and + * at some point, the drivers should be capable of parsing all the platform + * data from the device tree. + */ +static const struct of_dev_auxdata exynos4_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("samsung,s3c6410-sdhci", EXYNOS4_PA_HSMMC(2), + "s3c-sdhci.2", &s3c_hsmmc2_def_platdata), + OF_DEV_AUXDATA("samsung,s3c6410-sdhci", EXYNOS4_PA_HSMMC(0), + "s3c-sdhci.0", &s3c_hsmmc0_def_platdata), + {}, +}; + +static void __init exynos4_dt_map_io(void) +{ + s5p_init_io(NULL, 0, S5P_VA_CHIPID); + s3c24xx_init_clocks(24000000); + s3c24xx_init_uarts(smdkv310_uartcfgs, ARRAY_SIZE(smdkv310_uartcfgs)); +} + +static const struct of_device_id intc_of_match[] __initconst = { + { .compatible = "samsung,exynos4-gic", }, + {}, +}; + +static void __init exynos4_dt_machine_init(void) +{ + irq_domain_generate_simple(intc_of_match, EXYNOS4_PA_GIC_DIST, 0); + of_platform_populate(NULL, of_default_bus_match_table, + exynos4_auxdata_lookup, NULL); +} + +static char const *exynos4_dt_compat[] __initdata = { + "samsung,exynos4", + NULL +}; + +DT_MACHINE_START(SMDKV310, "Samsung Exynos4 DT") + /* Maintainer: Kukjin Kim <kgene.kim@xxxxxxxxxxx> */ + .init_irq = exynos4_init_irq, + .map_io = exynos4_dt_map_io, + .init_machine = exynos4_dt_machine_init, + .timer = &exynos4_timer, + .dt_compat = exynos4_dt_compat, +MACHINE_END -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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